I have a tko600, I cut trans tunnel out and raised id it to clear trans, I never actually checked my angles but I must have gotten lucky as I have zero vibrations, I used a modified stock crossmember to clear dual exhaust and moved the trans mount. I also have a 52 F1 Ford that I gotta spend some time on as it does have some kind of vibration from the driveshaft, I hate dealing with driveline angles, It sounds simple but correcting it isnt.