Hot Rod garage does a R129 500 SL
PREVIEW: That Doesn't Seem Right—Hot Rod Garage Preview Ep. 70
https://www.youtube.com/watch?v=Pz29zzUTrjo
Full episode ( it is only up for free for a month then it is pay. Later in the year it will be free again.
https://www.motortrendondemand.com/detail/auction-find-ballin-on-a-budget-575hp-mercedes-sl-500/0_5cqisdqe/