which distibuter
 

okay i want to use a stock style distibuter in my 351 windsor with a roller cam and the problem i have been finding is the ones ive been looking at are too short i have a efi one and its longer in length then the carbed one.

a 351 distributor is longer than a 302 and you need a a 351 distributor from a roller block or a efi on and then you need to change the cam gear.

i have a 351 efi distributer but my car is carbed with a roller cam but for some reason when i look at the carbs for a 351 no roller the shaft is shorter and doesnt reach the oil primer rod