Pat,
If your core engine still has the waterpump on it count the number of bolts
on the pump........86-88 13B has 7 WP bolts...........89-91 has 8 WP bolts.....
93-95 13B has an all aluminum WP.......This is quick and dirty but there are
other ways if WP is missing...........The 86-91 WP is cast iron bolted to alum
housing.........
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo