Selling your old engine to offset the cost of the 3.6L purchase is step one, its worth something.
The 3.6L Metzger motor bottom ends are WAY more reliable than any other air cooled engine design by Porsche.
By going into the project knowing a 3.6L top end is part of the scope is being realistic.
The ability to simply add a SW chip and get yet more POWER did it for me.
Upon completion you have a hybrid car with the best air cooled engine ever designed that you can beat on very hard as I have done for multiple track seasons
Its not rocket science as is setting up PMO's