Pretty sure he is talking FAST as in a E.T.... Not the FAST class as it stands for:
Factory Appearing Stock Tire.......... definatly not a backhalfed car in that.
As for the original question well if i was going to use it on the street i would do a mini tubb and spring relocation with cal tracs or RMS rear suspension kit. If it was strickly a RACE car backhalf with a four link. Coarse that just my 2 cent worth.
Matt