Study up on lithium batteries if you would consider putting everything under the hood. I ordered a 60 ah lithium cranking battery, and it is compatable with a Denso 60 amp alternater i have. At 16.5 lbs it reduces weight by at least 20 lbs, then add what ever you save by having the battery up front. A 60 ah li battery has a flatter voltage curve, so it delivers as long as a 100ah regular battery. It is also compatable with the Denso 60 amp alternater. So it looks like a great fit. The important thing is knowing the max rpm of the alternater and getting pulleys to drive the alternater at max rpm but not over. Also, setting up the charging wiring for near zero resistance is important. As for the voltage regulater wire i just looped it over to the out put terminal of the alternater. As long as you don't have huge draws on your battery, you will never need to charge it, just maintain it between races.