B & G cir.

D lux_2

I have a cust. moved in last year ask me to look at system . cir. is little noisey he said he oiled last year 3& 1 oil motor mounts sagging . supply house wants a lot of $$ for new cir. as it is no longer made . only numbers and such are B+G 1/6 1725rpm MRF 38 EV 115-6-8 Mortan Grove Ill . Flange to flange 83/8 pipe size 2.5 inch 1/6 hp . questin is will a different cir. work ? sys looks over piped what other info is needed to find less pricy cir. thanks