So be it. Sounds like it works good on your combo. However, there is a HUGE difference in a 9" non lock up converter and a 54# with no fluid 12" stock D5 converter when it comes to trying to spool up a T63E turbo. I myself ran that turbo back in '98 on my old Limited, and I too ran a 9" non lock up converter. Although mine stalled to 3400, it was a beast. So, I have to respectfully disagree with you, that a stock D5 2200 stall 12" converter will spool a T63E decently on a stock motor. Even with an RJC bleeder valve. Not trying to be argumentative or anything, just going off mine and my friends experiences since that turbo first came out back in '94 as well as my PTE experience. I just don't want to see him jump into a significantly larger than stock turbo on his car and be unhappy with it's performance. Being on a budget, that turbo would require alot more supporting mods to work properly, vs the 6131RE. 10.90s is very respectible with your combo and that turbo does like to be run at 23-30psi. So you should have 10.60s in it if all is right. However, you might run into an issue where the charge temps start to get overwhelming past 30psi with the E compressor cover. Alky cures this tho.
I myself am running a 6776RHP on my bone stock motor and need a looser converter. Eventhough I currently have a 10" lock up 3000 stall with an RJC bleeder valve, TT chip and the turbo is dbb. I have a 9" nl 3400 waiting to go in when I R&R my trans.
I still feel that for what he's wanting to do, play on the street on pump gas and run 12's, that the PT6131RE or PT6131E is the way too go. That is, until someone tries PTEs newest technology on a bone stock car and reports their findings or runs some numbers.
Just my O2s worth.
Patrick