I've just put turbo on mine.
I bought a 2nd hand sump...$60,welded the fitting on then swapped it straight over then sold my sump for $60.
So it cost me $35 for new gasket.
It's an easy job just messy.
There's about 30 bolts on sump and take off the 2 engine to bell housing braces as well as the 2 lower clutch cover bolts so you can drop the sump.
Takes a bit of maneuvering of the sump to get it out but it does come out.
Good luck with it