$439 is a bunch of money unless you care about a stock-appearing engine. I think I spent $35 for the bracket and $45 for the alternator. If you adapt the generator brackets as described, it’s even less. Your call on the value of looking like a generator. I avoid one-wire GM alternators like the plague. It should tell you something that GM shaves cost to save every penny when building a new car, yet they always used a three wire setup. Consider that not even GM was willing to cut that corner.