GT40X fuel/tune requirements

The price of GT40x heads has come down enough to tempt me into buying a pair for my basically stock '90 LX (with the exception of full exhaust). I'm a carb guy so I'm not sure what fuel system upgrades I'll need. Do I just need 24 lbs injectors and a matching MAF or is there some sort of tuning involved (adjusting fuel pressure or otherwise)? I replaced my pump awhile back and upgraded to a 110gph BBK unit. Is that enough? I'll want to run a Cobra intake, 65mm TB and my stock HO cam. The thing I like about the GT40x is they accept all the stock hardware like rockers and such (roller rockers aren't quite in the budget yet). I'm willing to sacrafice horsepower for a good reliable torquey street motor that will last a long time.

Great! That saves me some money not having to spring for injectors. Should I just get a MAF calibrated for the the stock 19lbs injectors then? I take it that with the larger throttle body, the stock MAF becomes a bottleneck then?

I forgot to add: I see the GT40x heads are available with 64 or 58 size chambers. Which do I want to select if I want to keep my compression ratio about the same as the E7s? Thanks.