After speaking to quite few people who have rebuilt e30`s, turns out I`m being too optimistic regarding timescale. Most of them saying it will take minimum half year to a year to have fully rebuild mint E30

Because there is always something missing, stopping and you get stuck at some bits. So for that reason, I have to get this black one sorted a bit more, so it lasts for my project time whilst building other one. Ordered wheel bearing assembly for front as there is a play. Also ordered, clutch release bearing is doing click click click when clutch pedal engaged.
Whilst driving on motoray few days ago, my front tyre went loud BANG and blew up. I had slightly low pressure and drove for half a day, then inflated to normal pressure and it lasted just few miles

Whilst replacing tyres, did rear balancing too - turns out I was driving just on bolts, there were no plastic spacer rings at the back on both wheels

Fitted.
But my biggest worry/question is - what to do with engine ?! The more I speak with bmw fans, the more confused I get. They split in two groups:
1. One side saying if I fit S50B32 or even B30, then my shell will last just few months and whole geometry will be gone as e30 is not designed to handle such torque and power, its simply not strong enough, cups will separate themselves from shell

Also I would need super expensive staged clutch, fitting some expensive thin plates in rear diff which cost around 500. I would need roll cage to stop body moving around. Etc etc. Basically - don`t go there and don`t do this unless you are building track car.
2. Other side is saying - go for it, E30 M3 Evo had 235bhp(and shell is identical even to 316) and just 86 bhp more won`t be any different, shells are engineered with reserve anyway. Just get the front, rear, bottom strut braces . Even a standard clutch would be able to handle this power. Drive shafts would have to be upgraded to much thicker ones from E36 323 Compact or Z3 M

Gearbox would have to be changed to bigger and more robust ZF 5 speed as 6 speed boxes from E36 M3 Evo are too weak. Brakes would have to be uprated to bigger ones.
Guys, any comments? I want B32.
I`m driving E30, 1989, 325i, 4 door. Restoring 1990, 4 door.