Should I build a frakentractor

Hello men, currently have a wd with a 45 crank and 4.125 overbore kit in it. Does pretty good for our small time outfit but as always I m looking for more lol. In my research it seems that a d17 block offers better oiling and a stronger block overall. This tractor also has the straight stick transmission in it. Also in my reading it seems the curved shifter transmission in the late wd or 45s are stronger. I would like to put a stroker crank in this tractor. Talking with Dan carpel it seems 5.5 inch crank is doable with his billet rods being used.
My question is will the block hold up long term with the crank in it, is there any supporting modifications that can be made to the w201 block I currently have or is it better off with the g226 of a d17? Also would it be worth it to wd45 swap the rear section of the tractor for the stronger unit with slightly slower gearing.

Tractor currently runs in a 2.5 mph class close to home with 3.0 mph being the speed of some pulls we travel to. I can run in a 5mph class close to home but I have nowhere near enough power to do that currently. The d17 engine is an approved repower for the clubs I run

Remember opinions are like belly buttons.
I have a wc with a late 226 block. 5 3/4
crank and 4.5 pistons 366 cu. Big block
Chevy ex valves in the intakes. Dowel pins
to line intake and exhaust manifold. Head
flowed ect. Tell Don you want at least a
6 crank and a 4 5/8 bore. Won't cost much
more
Now I would start with a D17. You can get
it light enough if you start with a early
one. It doesn't need to run. Just all be
there and not froze and cracked. You can
keep the 2 speed or take it out. Over a
hundred pounds. Don also knows about fire
rings. He bored my D17 to 4 3/4.

Can add a cast iron oil pan, billet mains. Cast iron pan limits
the stroke. Tin pan can be cut out and windows added for rod
clearance.