I am in the process of doing the same also. There is lots of info in the tech section and if you do a search.
What i did, and seems to work
RA60/65 similar to MA61 (except for the steering arm and bottom control arm), using RA60 steering arm and bottom control arm to keep camber angles etc as close as possible to normal. Sprinter top mount on strut, sprinter spring perches on strut. RA60/65 hubs and brakes which are a good upgrade anyway.
There are lots of other approaches available, with many requiring machining, fabrication and major mods.
I am fitting MS65 hubs to the RA60 struts which will give me a 5 stud front hub allowing me to use Supra front brakes.
Lots of ways to do it, I recommend you spend time searching and reading what other people have done, and select what is most suitable to your requirements before you spend money.