Check if a part# 19100-78102-71 fits your application. I had the same issue with a 4FG25. It had a 4 cyl lpg motor & I know it wasn't a 5-R. I remember that the motor was larger than a 5-R- it was a much tighter fit. The diostributor was towards the waterpump, up with the intake manifold if I remember correctly.