Anybody know if you can use a 351w dist and oil pump in a 289? My buddy has a brand new Mallory unilite dist that I can get for a steal. The only thing we noticed different about the distibutors is that the 351 uses a bigger diameter oil pump shaft. The oil pumps look the same too other than the larger shaft. Is a 351w oil pump shaft longer than the 289? Just thought I might try it since I can get the dist so cheap.