Building a TH400

I bought a Reid case from TCS here in town (min of 3 months to get) but they do not sell high performance gears and such so....... Who/where is the best place on the west coast to buy top notch internals from?

Thanks

Not sure who does on the west coast, M&M transmissions here in Missouri build the 400 turbo that all the promod guys run. https://www.mandmtransmission.com/ Not sure how much HP you want to put through it, lots of vendors on ebay selling the updated drums and roller clutches. A good valvebody and updating the roller clutches will hold 800 HP in my experience.

TCS, who's a moparts sponsor has all the good stuff. You got the cast there why not the parts?
They also make a quality converter

http://www.mikestransmission.com/

OR

http://www.protransracing.com/

TCS up here does not sell high performance gears. Looking to go up to 1200 - 1500hp

Contact hutch here in London Ontario
He will have everything you need and a great guy. Amazing wealth of knowledge and races a roadrunner
https://www.hutchtrans.com/