Very cool! Good luck on your buggy build. You'll find the project to be more enjoyable than the riding. Least that's what happened to me. What are your fab skills? First build? Guy who's forgot more than I'll ever know? Do you have a budget in place? If not that's a great first step. The expenses get out of control in a hurry if your watching them. I'm just trying to get an idea of where your at. If your brand new to go kart/buggy's/atv's would you consider buying a used buggy and modifying to your taste? That's by far the easiest and cheapest route. How big of a guy? I'm a pretty big guy myself. You should see me getting in and out of my buggy.lol. It's not pretty but it gives my buddy's some entertainment. Right before they eat my roost!!

It's hard for us shade tree mechanics to do better than engineers on suspension design. Takes tons of trial and error(which is time consuming and expensive). I've always thought converting a Honda fl350 to a lawn mower engine would be great for the kids. It already uses a Comet CVT setup. Should be able to modify a side shaft engine pretty easy. You would also get to keep the F-N-R box. Trust me from a big guy. Reverse in a buggy is mandatory. It sucks jumping in and out 3 times to turn around. It's not an easy task for me so it gets old real quick. It could take a while to find the right
one for this. Id look for low rust, good cosmetics(not required but making them pretty costs big bucks), no frame or suspension damage. Engine doesn't matter but a running used one will fetch you $300 back and you'll get to test the trans. If you watch craigslist you can find a pretty clean project for 1000-1500. Be picky though. They're pretty hard to find but theyre around. some people think they got a hemi cuda.
Or you could just buy it's bad*** big brother the Honda Pilot if it's affordable to you. Then just ride your buggy dream instead of wrenching on it. I wouldn't modify a thing on those. Worst thing they did to them is quit making them. Not many other flaws. I had the opportunity to ride one for the first time yesterday. They were very far ahead of there time. All I can say is Wow! More addictive than crack! Just weigh your options before you jump in. I've spent $1000's on my FL350 Odyssey trying to mimic the fl400 pilot. More than a pilot cost for that matter:-( (can you say fool!) that's me. Can't beat the real McCoy. If your wallet allows Honda already designed and built the perfect Offroad buggy in 1989-90. Oh and it rides as good as any Cadillac you've been in! Seriously!
And by the way if you do get to ride/buy(if you ride it you will!) one don't blame it on me!