it b cool if someone got a 1000cfm TPI throttle body,made a adaptor to fit a holly pattern manifold, drilled out a place for the injectors,Mebbie the nitrous bosses,and put a stock vette or camaro cpu, Could use any brand specific throttle body within brand,but home grown on the cheap.? someone can make a little scratch coming up with this power adder friendly conversion,Maybe...  

There is a TBI (not TPI) that fits the Holley bolt pattern.  It was a tech article either here on 4wheeloffroad or fourwheeler.  I don't remember which site I saw it on.

A universal do it yourself TPI kit is beyond most peoples abilities so that puts you back to the already existing well engineered injections systems already available.