Does it make a difference for alignment or some other oddity?<br /><br />It seems as though it would be "safer" for the crankshaft / drive shaft splines to have lwr unit removed. <br /><br />I am installing reman. powerhead on 1.6l Sea Drive and have lwr unit out already. I've been considering installing powerhead first than lwr unit.<br /><br />details, details, details............