oc thread

I found some great info on the FC oil cooler in that thread but if someone can lend a bit more that'd be great. What size are the fittings? This is for a 89-91 t2 right? Also, does anyone know Ray's going price nowadays?
thanks

 

M18 x 1.5 for both inlet and outlet.
All second gen oil coolers are the same.

 

thanks a mill scathcart.