I just dropped 351 svo motor in my 95 gt.I got a set of 351 swap shorties for 87-93 so I wouldnt have the egr tube to plug.I was needing some help on rather I should run a 87-93 prochamber for shorties or a 94-95 prochamber for shorties.If anyone know the difference in the two or has so ideas please help,Thanks