I'm looking to replace my Borg Warner automatic with a Tremac 5-speed.on my 1964 S Type.
Has anyone done it? Is there a kit for doing the job?
P.S. I know I will have to aquire other clutch and pedal parts in edition to likely kit conversion parts.

 

Several member have done the conversion, myself included. I went the easy route and ordered a kit that includes everything you need (except; for the transmission mount under the car). The dedicated kits put the shifter in nearly the same place as a factory manual. The kit came with a new 4.2 flywheel, clutch kit, reverse light adaptor and bell housing. You will need to source a custom drive shaft. It was not cheap and I can't recommend the company (American Powertrain doing business as The Driven Man) due to their poor customer service.
Those more handy with a welder have made used Tremic T5 transmissions from other applications work.
Do a search in this forum. There is a lot of information.