I now understand why u said in another post that the PT70 would be a pig (spooling) compared to smaller turbos. My 74 dual BB spools up ten times faster than my PT70 did, I wouldn't advise anyone to use that turbo (PT70) especially if they do a lot of street driving. It didn't spool up fast with my combo and I have 250 cubes.
A guy pm'd me about a week ago interested in buying my PT-70 so I asked him what his set up was... "He seemed newer to the TR community then me". He said he had a stock set up, so I told him I wouldn't feel comfortable selling him the turbo because it would be like robbery. When I told him the long laundry list of mods I felt he should at least have on the low dollar end (stock ported heads and manifold, 70mm plenum and TB, a nice cam, fuel system, FMIC, 3" dp, a nice exhaust system, MAF, and alky) he never replied back.