So if the inspector knows his stuff a visual inspection would reveal a later intake. Sounds like a problem to me...
Are you required to actually retain the Renix controls? If so you'd have to keep the Renix throttle body and adapt it to a late intake bolt pattern or adapt the Renix's TPS and IAC to a late intake's HO throttle body. Another hurdle.
Not to knock on the Renix system (can't do that here without lots of flak :D ), it's served many of us well, but it's archaic. To drop the cash for Edelbrock's fancy new head only to be handcuffed by an engine management system that old and "un-tuneable" (is that a word?) is, um, less than ideal imho.
I don't want to recommend anything illegal, but a different engine management system (*cough* MEGASQUIRT *cough*) with wideband support and the like running the show would make your investment much more sensible.