i have a 57 oval can i change the solid beam gearbox for cv still set up like an irs set up

give Vintage Vee Dub they will tell you
ph 0297 891 777

if you weld in irs pivot boxes and swap it all over

sweet anymore info

You will need to buy aftermarket (or cut from an irs beam) brackets and borrow a irs bracket jig from someone.
Then have the brackets PROFESSIONALLY welded to your beam.
Then you need new spring plates, the irs arms, axles, cv's and a new box.
I have a complete beetle irs rear end and 1600L SSP box in marrickville if you are interested.