Posted April 23, 201114 yr Rob told me a while back that i need to pay little extra to have a true 18v regulator installed on my alt.How much is it for starters and is it still internal i hope?2nd, for safety sake, i'll have 6 25a stepdowns in the car to run it on 12v still..But, if i purchase the VCM, can i still safely step the regulator down to ~15v if i ever had to bypass the stepdowns?