That is definitely a concern. I want to drive the thing and not hate it, or be a nuisance to traffic. Which here is 75-80 mph. And on top of that, I have a mopar crate 360 and a 46RE sitting here built and ready to drop.
Daing, I had a 87 or was it 88 last year for the slant, 1/2 t. 4 speed OD. Heck I pulled B bodies and such on my 18 ft car trailer. No issue once I got it rolling!!! Back in the little hills of Mo.
Yeah I guess what I mean is it'll cruise just fine once you're already doing 75. The issue is getting it up to 75. If you have a short on ramp with a stock slant six in CA, you're a liability. I just drove my SL6 Duster to work this morning and I have to do everything in my power to ensure I have as much momentum as possible when I get ready to merge because there is no power in reserve there to get me out of a hairy situation.
Like you TT5.9mag, I have a 340 sitting on the shelf ready to go. I've had my SL6 Duster for over 20 years now but I think it's time to make the swap so I can enjoy driving it again. Love the reliability and gas mileage but those benefits aren't as important now that it's not my daily driver anymore.