Sounds like maybe you aren't in US? Starting in 1969 US destined beetles all had IRS transaxles. Are you not using a VW pan - if so then go with what it comes with. You can convert it to IRS. VS made mostly swing axel Speedsters and convered from IRS to swing axel. Swing axle cars have a narrower rear width (track) so different ring and tires fit under the rear fenders.
So, you raised more questions... lol.
I am in the US but one of the manuals I brought with me from the UK. The kit I want to purchase is the customs fiberglass from mexico. I dont know if I can specify what year frame I get as part of the kit. Maybe I can, but just incase I cant, I want to know my options.
If I got a SA chassis is there welding involved to convert to IRS? Do I need to convert? In your opinion... which is best? I like the fact that camber is a little more consistent with IRS, but I’m not really going to be on the track or off-roading.
Who are VS? And why did they “down rate” their suspension?
When you say different ring? And tires.. whats ring? Can I get a fatter tire in the rear with a SA?
Then theres the transmission, so, if Im getting pot luck on my chassis, can i put any transaxle in there? Or would it need to match the type of chassis? I guess im asking if the mountings are consistent across cases and chassis and can you bolt up either a double knuckled and single knuckled axle to any transmission?