Too hard a 1-2 shift and banging into reverse were 2 things I asked A&A to address when they built my 518 valve body. They did and I am very happy with the results. The 1-2 shift is firm, but I no longer worry about pulling the tires loose at the shift. And it now goes into reverse like it goes into forward, smooth with no banging even with the higher idle.

So yes, it can be done.

Master, again and still