There has been a ton of discussion on the subject of install position on the 041 cam around here. Generally most seem to like that camshaft in the 108-109 ICL position. With a 113 LSA that's 4-5 degrees advanced. With a 114 that's 5-6 degrees advanced. Depends on who's cam card you look at.
If it were me in your shoes, I'd take the suggestion of using the 2801 camshaft for your application and have the added benefit of some additional lift over an 068 without the need to increase rocker ratios. It's a very mild camshaft for a 389-400.
I've exploited the 068 for all it's been worth, it's not a big camshaft at all, idles baby smooth, and is an "okay" performer. Not something I'd consider worth while going through all the trouble and expense for just a camshaft swap.
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