Well I decided to trim my stock Savage hinge pins and fit it all in myself. Integy never replied to me at my request to buy just the hinge pins from their kit...
I cut the hinge pin to length and then used a Dremel and thin cut-off wheel to cut the e-clip groove. That worked like a champ and all fits well.
I can't say it was worth the effort yet, but I imagine it will be worth it when I install the LST2 shock upgrade and the stock toe adjustment (turnbuckle) is no longer there and in the way!
Pictures later.