Trying to find info and coming up short. I know lots of people swap out the flat 6 or v8 for a modern v8, I was planning to do the same. Like most things you start on one thing and next thing you know that snowballs. For me it was reading and article on putting trips on a car, which made me think.. man I bet that would look good in my 51.. then I looked at the prices and was like wow a nice 4 barrel would look good in my car... but wait multiple carbs.. really dig them.. and I happen to have a set.. except it’s Webber’s for my dads old 300 inline 6 that he used to race.. which then made me wonder.. man wouldn’t it be cool if I could put his old motor in my car and surprise him that they finally got used.. Like I said snowballed.. Anyway the thing is my 51 came with a 6 from what the previous owner told me... but he stuck a 283 in it. I’m a ford guy so I’m selling that off, along with the borg Warner t 10 4 speed. I don’t want to cut up the firewall. I was planning on taking out the stroker motor in my 68 mustang and swapping everything into the 51 but it has a broken ring that needs to be fixed first. I know that c-4 trans will bolt up to the 300 but I don’t know how much longer the 300 is to a stock flathead 6. Does anyone have any idea? If they are close then I think I’m gonna try to surprise my pops.