Howdy Evo ,
I used to build custom vehicles including a lot of trikes long ago , using Ford Escort diffs with narrowed housings and resplined axles , later on I used 8 inch ford diffs , I made new swingarms that attached to the axle housing , new spider gear housings to accept the Harley sprockets etc for FL and Softails, the problem with a live axle like the DNA and original servi-car rear end is the constant throwing of the frame from side to side on uneven or pot hole roads etc .
Not my cup of tea but the introduction of V-Dub trikes addressed that problem with their independent suspension , the engineers and the RTA loved em . I was building a V6 Chevy , Turbo 350 trike with a S series Jag rear , when the 450 Kilo weight rule was brought in by the NSW RTA and that killed my enthusiasm for the project , even though I was working with the RTA and working on the introduction of the new 929 rules concerning the light vehicle code here in NSW .
Your enquiring about the DNA , I dont know anything about em except what I've read about in the past , which is thay are virtually a direct bolt in kit on softails or FL's etc , I like the look of em .........a lot have been built in the states , people over there must like em , I dont know of anyone out here that has one.
My diffs used to be 40 inches flange to flange ,and with 15 x 10 Centrelines and Mickey Thompson 29 x 15's , a softail trike would ride pretty good with the tyre pressure's down low around 12 to 15 pound .....any higher and the bike would get thrown around too much
one of the last ones I had done , I adapted Commodore rear dIsc's and calipers to the Ford rear allowing the use of the hidden Commodore internal drum handbrake assembly
..................I'm a lazy , laid back , retired bum now , and if I was ever to do another build in that direction .....I like the look of simplicity with the original servi-car rear of which the DNA would fill the bill
Oh Yeah Evo , ..........I havnt forgot your past generocity , I owe you a couple of drinkies , when we catch up next