I am 17 and need a little so called guidance

[ben88]

Hi Guys,
I am new to the forum and i am going to have a few questions. I have a 1968 chevy c 10 stepside which untill this weekend has a 6-cyl with a granny 4-spd. This up coming weekend i am pulling the 6 and granny because it is already sold. I built a 350 sbc and just picked up a muncie. Now my question is, once i get the motor and tranny (meaning the 350 and muncie) in place what do i do about the shifter because i heard something about it hitting the bench seat and the shifter being to short.

Thanks for any help in advance