power ouput of me 342 windsor stroker -need help getting parts

hi come across the forum yesterday -good to see a NZ ford forum(usually use the Aussie one)
brought my new XR8 from hamilton couple months back it's a SVO number 40 from south auckland ford(have own 8 different 5.0 windsors)
the motor was built by - hartley- 5-7 yrs ago or 40-50,000kms
what I've found out so far from the work I've done is-
EL 302 block
-Scat stroker kit 342ci-edlebrock RPM heads-Yella terra Plat rockers-Trickflow intake(+ spacer)-kiwi cam(little power below 2000)-SVO headers
-65mm T/B -24lbs blue injectors-70mm MAF
Now I haven't taken it down the drags but I did have a rolling start 1st gear drag race with a BA GT-P 290kw which couldn't get past my rear door even though it took me three goes to get 3rd(the poor T5 can't handle the torque)
I know the 65mm T/B has to go -anyone know where I can get a complete 70mm T/B with matching EGR plate-
many thanks for any replys in helping me make this EL the beast it will become

Ring Segedins Dominion Road, Auckland. Speak to Shane. 096386439.

would I have to get me ECU tuned for the 70mm T/B I'll keep the original 73mm MAF don't think increasing it to 90mm will help all that much