call darren at all season motor sports in cranbrook bc. i believe he has crate 1000 motors on the shelf and hell be able to tell you if its cheaper to rebuild or drop a new one in. 12504264009
I have a few M1000 motors sitting around,a brand new crate motor,a case ported and top end ported motor built by Brent Linderman with 500 miles on it and I also have a M1000 that has about 500 km on it.....I ain't giving any of it away but would part with a motor for a reasonable price....PM me if you are interested.