Wow, what a wealth of information. I really appreciate the input. I knew other parts would fit, just had no idea which ones. I purchased ltr450 master already and plus 2" ss brake lines. The brake line manufacturer said the banjo bolt was the same as 500. I'm hoping they're right. Lol. In hind site, I wish I didn't powder coat my spindles and hubs, I would've bought the 400 spindles/hubs and yfz calipers. Lol. Along with rear g force hubs for 400. Then I could've upgraded my rims to bead locks. Oh well, a future project to look forward to. This is actually my 16 yo son's quad. He worked all summer to own another Zilla, paid $3200. Motor was beat along with almost all the bearings in chassis. He put another $800 out for parts and I'm helping with the rest. Little bastard better appreciate it. Ha ha. I should just buy it off him, I'm falling in love with this beast. I remember when they first came out when I was his age. Ha.
Thanks again for all the insight, helps a whole lot. Still figuring out how to navigate this site, I'm like a caveman.