Two questions when restoring a 26 Tudor sedan body with some rust out in the cowl and heavy rust out in the rear fender wells what have people to patch or fill these rusted spots. Two when rebuilding an engine has anyone upgraded to insert bearings or scat stroker cranks and how has those more modern upgrades work for people?
Some of the parts vendors have steel panels for replacement of the wheel wells. Otherwise you will need to cut and fit pieces. The parts should be welded on and the welds ground to smooth the surface. Small areas can sometimes be fixed by welding alone. After the parts are welded in place all the area must be cleaned of all rust and contaminants and primed with epoxy primer. Next step is to use epoxy filler and sand until the surface is completely smooth. Then use sanding primer paint and wet sand. You can't go too far in priming and sanding. The finish coat will not fill in imperfections it will only flow to fit them, so get things as smooth as possible before you finish coat anything.
As for the engine, insert bearings are generally used in cars with pressurized oil systems. With the small journals of the Model T crankshaft, any drilling for oil passages will weaken the crankshaft and make it more prone to broken crankshaft.
I have used SCAT crank but with standard T stroke. If you use a stroker crankshaft you will also need to use rods and pistons made to work with it. Anything which increases the power of a T engine will also cause other problems with the transmision and especially the differential and driveshaft. Everything was made to work together and any change will affect the other parts. Someone else who has used a stroker crankshaft would be better to answer questions. You will also need to drop the inspection plate under the engine to fit the crankshaft. This I know that sometimes the clearances inside the engine can be very close such as the distance from the crankshaft to the camshaft, so be informed.