The '91 I just bought has a tiny side post battery in it and I have a less than year old heavy duty top post battery I would like to put in it. How hard is it to switch it to a top post battery?? I would imagine I can just switch the connections at the end of the positive and negative terminals and be good to go. Has anyone else done this? Also is there a write up anywhere on the big 3 upgrade on here? I figure if I'm in there getting dirty might as well do some upgrades