I have the Trailmaster MB200-2 and really enjoy it. I am only 5' 10", but I am 200lb and it has no problem hauling my fanny around. The suspension would easily handle you without bottoming out. The TAV is awesome. The brake (rear drum only) is the weak point. I put the EBC grooved pads...
coupeowner 2008 Bashan Snap On Mini Chopper
Not really old, but..........124cc, 4-speed, electric start, hydraulic disc brakes. Supposedly 1200 made to roughly emulate the OCC Snap On build (Season 2 - American Chopper). They were given away as promo items. Street legal.
Did it show up yet? I am still loving mine. No real issues yet. Make sure everything is torqued and tight when you get it. My TAV was about to fall off after the 1st ride (I couldn't wait to take it for a first spin - but should have). Congrats!
As FOMOGO mentioned, the hemi and clone flywheels are not the same taper. Unfortunately the cranks are also not an easy swap (longer stroke). I believe you will need a Kohler flywheel to work on the hemi crank.
Go with the EBC set FOMOGO noted. The EBC's are a big step up from the original set. The springs attach differently (forming an "X"), but they work just fine and are a great replacement. You can also get them off of amazon for a bit less. Just search for EBC 304G.