Violent Take-Off Shudder
What is so hard about dropping out the 4spd, unbolting the bell housing reaching up with swivel sockets and long extensions.
Then remove the clutch and swap it out with a factory pressure plate and stock clutch disc.
4 hr job at max, easy peasy.
Problem solved.
Then ship back the Brewer clutch assembly and get a refund on the parts. Covers the cost of the new factory clutch from Rock.