I am putting a 250 in my 52 GMC to replace the 228. I did a search to find out if the bellhousing bolt patterns are the same on the 228 and the 250. I couldn't find out what I need to know. I know that I will have to convert to side motor mounts. If the bellhousing will bolt up, then I will fit a borg warner T 10 to the stock bellhousing using the tricks that make the T 5 swap work. Am I off base here or should I use the bell housing that is on the 250 and use a tranny mount along with the new side mnunts for the engine?