Nick, very nice sig but .........
it seems an illusion. Add tree sap, remove a cylinder, add electrical (LKM) prob, sway bar link? issue and we have an e34 that needs some love.
Thankfully, you're realistic and realize it needs some an attention. These babes will go a long way to serve you right, just give her what she needs !!
On the topic of manual trans, the original ZF 5 speed is still tickin strong after 525,000km. I regularly hit 6000+rpm in 2nd without a dispute
Dave M