Looking good! That stainless will be a lot easier to polish up than alum too.
I haven't welded a single thing on my car so I can only imagine how satisfying it must be to be doing more of the work yourself.
I notice on the previous page you had to move the take-up point for the engine mounts. I had the same problem with my Harrison but thought it was a one-off mistake, hopefully the new owner of the business picks this up and modifies the jig. The heads on my L98 are now roughly 130mm from the firewall/tunnel and there's 30mm between the balancer and the power rack. It's so low in the engine bay I'm thinking it might need a fancy induction system.