Yes, there is no welding on the bolt-on kits, hence the name bolt on. LOL There is cutting of the stock frame though to remove the hardtail rear section. Make sure you don't cut off to much or the wrong parts. If you do, your frame won't be any good any more. Also use the correct and Hi Grade nuts and bolts for your kit. No less than grade 5 nuts and bolts, not the cheap ones.
Nicholson 500x (Project)
Nicholson 185s
Nicholson 110 (That takes an atc70 tank)
Ascott 500 head/350x (Project)
Homebuilt Racer Chromoly Suspension 110 (Ragin Runt)
PK Racing Suspension 70
A+ Inc Suspension 70
AWS Aluminum 90 frame
Hi Performance ATC Suspension frame rd350
Hi Performance ATC Suspension frame 90