I do in fact have the HD converter with anti ballooning plates. When I had my 318 in it I was planning ahead to run nitrous on that engine. Also as far as cam goes, I talked to racer brown on that issue. Like you said any cam is fine it might not be as efficient but a any cam will work with nitrous. You may have your car setup for "200hp shot" but with your particular cam you may only be getting a true "150".
