Help!! 250 to 350 swap, transmission issue!

[burnin oil]

My original post was lost to cyber space so this will be quick. Avoid the Mr Gasket shifter to include Indy brand. The shifter is made of cheap metal and wears quickly. My old 67 had a ratchet shifter that ate the pins. When it worked it was fun but it skipped the rails all the time. I got to the point that I could unbind them in under 30 seconds at a stop light with two pry bars. With a mild 350 I would suggest a saginaw 4spd trans. There are still alot of them out there and cheap. Last one I bought was only $200. A heck of a deal compared to a muncie. You can aford to grenade one every now and then.