I have recently converted 1989 351w Motor from Fuel Injection to Carb. The problem I am currently stuck on is the distributor. Obviously I cant use the old Electronic Distributor. I took a distributor out of an older 351w Carb Motor and the distributor shafts are different. The older distributor shaft being shorter and the newer distributor Longer. Am i able to use the short shaft distributor on the newer motor or no? If not what can i use and where can i buy it?