Yokomo experts come in
 

I live in the USA,and parts are hard to come by here. I have 3 yokomo mr4,and building a mx4 from scratch. My question to u all is what parts are interchangeable between the mr4bc,mr4sd,mx4, and so and so.I was looken at the yea racing front hubs and the rears,and knuckles for the mr4sd.Do the bearing fit . Are the cvd from the mx4 the same size as the mr4bc? I just need to know what is interchangeable in all the models . Is there a web sits I can go to that has this ? Or can some one here help me. :(

The way I always did it was the old and 100% ful proof way. Google the exploded diagrams for the models in question and see if they are the same part number
Always worked for me

For MR4BC/TC

MX 4 CVD will only fit if you use the MX 4 diff outdrives. Front and rear hubs and C carriers will fit. Rear bulkhead and cap is the same (barring an extra support) and so is the rear belt. The layshaft will also fit but the mx 4 had oneway slipper. Ball joints are the same for all 3 models

I'm not sure if any SD parts will fit