a lot of us have said to step up the stall cause we have been through it but he doesn't want to listen so go with whatever one you want.
the driveablitly is not that much different at all, mine is a 245mm 4000 stall and I dd it no problem at all even with my heavy truck

 

Wish my 34-3600 258mm was a 245mm 4000. Don't get me wrong mine works well but that little bit looser converter would make a difference!

 

Circle D FTW!