hey everyone, im going to the auto salvage yard tomorrow (i hate calling it the junkyard because not everything in there is junk, except for the foreign auto section, haha) and will be looking for a 250 so i can convert the 250 hei distributor to work in my 54 235. My question is what and where can i get the collar that replaces the one you file down? And what else should i grab. Thanks!!!