new to the hondas q's 91 hb help

[91crxracer]

I bought a 91 hb for dirt oval racing and it has a d15b1, 5 spd and pgmfi, how could u tell if someone changed the cam or head in it. also how can u tell what 5spd tranny it is. Any help would be appreciated

 

[efcivic4dr]

If its a d15, more than likly, its BONE stock. Not to many people mod a d15.

-Carl-