Track car build

[Jon8710]

Hi all

I'm looking to build a track car out of a BMW 635csi
Iv got the chance to buy a wide arch race car shell
And going to get a donor car and swap all the
Bits I want over, problem being all 635's seem to be auto
Boxes if I bought a donor car with a auto box in it would it be a massive
Pain to convert it over to manual ????

I'm not quite sure how much of a job it is ???

Saying that I'm a massive amateur mechanic so any job is a big one
But I'm looking to do this over time.

Any advice would be appreciated

Cheers