The very thing that Dave was trying to avoid is happening. Your big dilema liv4gnz is that you don't know how to repair your transmission,I'm assuming. Because of this I would ask you this question. If you don't know how to do the work,how will you recognize the person who does? What If the first person to offer their services is the best person for the job? Because your trans lasted 20 years I would guess it's one of the good ones,in which case any of the reputable trans guys would probably have success with your trans. Do you understand that Dave is one of those guys? It looks like you've just turned down a $500.00 rebuild by one of the few people on this earth who know how to make a 2004R work hard and live long. What reading and information gathering exposition led you to make this decision? Your comment about a stocker not being able to cut it is actually not true. The transmissions that Dave builds are rediculously close to stock. You don't need extra clutches or a bigger servo. I think these are just two of the things he was trying to prevent someone from selling you. Don't allow name calling to take your eyes off of the fact that one of the best has offered to do your trans for $500.00. Do you think It would be better to have one of the other reputable builders do it for $1500.00?
I don't want to knock any vendors here BUT I will say this as an experienced 200-4R builder myself.
Guys like Lonnie, Chris, Bruce, Mike Kurtz, Mike Ridings, Brian Bissonette, Biran Hofer, myself, and a handful of others have extensive experience with the 200-4R.
I have a handful running 10's, many in the 11's, and many many more in normal cruisers that might run a high 12 on a good day but more than likely close to stock GN power.
Almost everyone of the vendors on here is going to suggest similar parts at similar power levels. Some variation but for example, I would bet that all the ones I listed would want something better than the stock 694 servo for anything greater than 550 HP...probably anything greater than 450 HP.
Most will recommend an improved forward drum on anything running better than 12s.
Extra clutches.. Not necessary in many cases but on a 10 second car, not installing an extra OD friction would be pure laziness IMO. I cut the pistons in the lathe in about 5-10 minutes and they are a PITA but 5 mins on the lathe and a $2 friction is nothing in the scheme of things to do one of these things RIGHT.
Anybody that has played with them often has popped a fwd drum...
Sometimes they pop on a STOCK trans pulling up the driveway, no good reason, they just fatigue and go.
Any GN has probably led a spirited life, so re-using the stocker drum is always a gamble, even in a stock application.
You truly do get what you pay for most of the time. I easily spend $300 worth of parts to rebuild one to without any billet. Master kit, both sprags, thrust washers, bushings, band, filter, TCC solenoid, pump rotor, vanes, guide, rings, stator, sun shell, a direct drum half the time, TV cable, boost valves, fiber pan gasket, etc.
That's not including shop supplies, overhead, and my time.
If the man can build a righteous 200-4R for even a stock GN for $500, my hat is off to him because I couldn't even do it for myself and it be done "right" where I would be happy with it.