Last year I bought a 2inch "clear water" 212cc trash pump from harbor frieght. I have beat the living out of it i fact yester day was the first time I clogged the impeller and I have been tough on it. I noticed there there 3 inch full trash pump has the same motor and bolt up as there 2 inch both cast iron impeller and impeller housing. I know I could switch the entire bell to make it a 3inch but I already have the intake hose 70$ . I was thinking of porting the internal ports larger kind of like you would do with a cars exhaust manifold . Any ideas on this project ?