My buddy Jacob just got a 85' carbed 5.0. It was originally a 4-cyl and still has the stock radiator and tranny. It has a beefed up rear end but whatever auto tranny came stock with 85's is still in it. His dad said he wanted to drop a t-5 in it. is this the best choice? he has a standard ford 302 in it with moroso engine upgrades (i believe heads) as well as an upgraded distributor. what parts will give him the biggest bang for his buck?