Blower itself is about 1400-1500 + the vodka and tonic
Then you have belts and brackets etc, so a couple of K before mapping.
you can do the eaton for 500 notes.
The M90 is probably a better bet in the long run, as knowing you, you will want more later on, when i said M62 i was giving my preference for 250bhp.
M112 will do 400bhp+