I have an old MSD soft touch rev limiter with a bunch of "chips".
I put the 7000 rpm one in mine for my 340.
I could look to see what range my extras are.
Your big motor would probably need something lower.
Hows the hunt going?
I happened to look at my shaker grills, and they have the same markings as those $1400 ones on ebay.
No pentastar.
But now I see that I need the trianglar cold air flap.
But I have a spare smaller oval hot air flap that needs just a moment of work.
The warm/ cold air...
318 and 340 are the same length. I built a 360 with those rods and some really light pistons. Hasn't blown yet.
But the purists will want 340 rods.
Google is your friend for chrysler part #'s
That long bolt is big block only.
You might need to show what bolt you need.
I think I get it now, you need the through bolt for the isolator. The bolt that goes through the K member.