400 into 65 valiant

It'll fit and bolt right in with no exhaust. Beyond that, I don't know yet, as all I've done is tons of measuring. Also there ARE factory pieces that will make it happen. However, you do have to modify them. I haven't done any actual work yet, as my 170 is still runnin strong, but the time will come hopefully this year after I find a bellhousing. Then I will start mocking it all up. My hangup is going to be the three on the tree column and linkage. If I cannot get the driver's side exhaust and the column linkage to play well together, I will probably leave the car a slant six. The three speed on the column is that important to me. I don't want to change it. I've done some preliminary measuring with that and things actually look better than I thought. Of course I won't know for sure, until I do the install, but so far "I believe" it might fit. I know beyond a shadow of a doubt it will bolt in without manifolds and I am 100% positive the passenger side manifold will fall in and fit, as I've seen pictures from someone else's project.