Is a d15b6 crank (HF) the same as all other 88-91 D series cranks??

any info appreciated thanks

 

The D15 cranks are all the same, the D16 cranks are larger than the 1.5 cranks

 

This may be old news, but from what I've found Crankshaft Journals on 1991 CRX HF are 1.495" that is smaller than the other d15's. In addition the rod bearings are only .672" Wide whereas D15s are usually .745". I have been searching for Crank Kits for my customers to no avail.