I had HardcoreZ28 do my engine swap for me. I elected to keep the 305 in my 88TA because I wanted the better gas milage for cruising since I didn't plan to race it.
If you already have a go-fast toy, then put the 305 back into it with the TPI, and just cruise around. Rebuilding the 305 -may- be cheaper than buying a new one. Of course a running used one may be so cheap that folks are giving them away for free. Just get the gaskets and fluids since your ECM is already set up for a 305TPI. You can always rebuild a running 305 later. Of course if you have the engine out, thats the best time to rebuild.
PM HardcoreZ28 for availability. He has his own business
www.rpmrestoandcustom.com
__________________
I USED TO HAVE an 85 Camaro 305 4bbl, 90 Firebird V6, 97 Firebird V6 (10 speakers!). Despite the two family vehicles, 3 kids, wife and mortgage, I can finally realize the dream - 88 TA almost all stock... for now.
http://www.cardomain.com/id/untameddave
Wanted this -

, but ended up with this -

for free. Can't argue with free.