Downsizing coolant tank?
 

I was wondering could i use a smaller coolant recovery tank, so that i can have more room for relays and distribution bars. I have a lot of upgrades in the future would like to have a way to add them if possible .

Probably. I know mine never even comes close to taking in all the coolant in the recovery tank, so I'm sure it could get by just fine with quite a bit less. You can buy a cheap plastic universal one for 10-15 bucks, but you'll have to come up with some way to mount the PCM.

Personally, I would consider relocating the battery instead.

And making it Top Post! :)

Ive converted it to a group 24. Makes life wayy easier! I think i can fabricate a bracket to hold pcm. Im also working on something to hold a battery onto old tire crane crank underneath.i already have the battery box, about 20 feet of 2/0 awg, anl fuse.