I like reading this forum, so I figure I should contribute.
My current 510 has been constantly evolving, so here's a look back on where it's been.
Bought in 2003 on eBay I flew from Vancouver BC to Oakland CA to pick this up. Very tired (burnt exhaust valve) hot L16, a bunch of good suspension bits, and the usual run of new old car problems.
I started aquiring bits and by new years 2005 it was painted Honda (oops!) Championship white -- the greatest of all whites, and adorned with some JDM kit.
What's next to do but go racing? Autocrossing and Hillcilmbing mostly -- the car looked and handled great but was always very slow in a straight line.
Finally got the car Megasquirt EFI equipped in summer 2006, and the built L18 (block was from a Datsun 610 stage rally car my father built in 1980) mill was finally in the car that winter (latest dyno was @ 121whp), and I moved to California for work.
How about we get a little more serious?
Shake down track day
Install 8 pt cage
Looking quite a bit more serious -- 195/45-15s on 15x6 Panasports being traded in for 195/60-14 RT-615s on 14x6.5 RS-8s (two sets).
Some more suspension tricks and armor down below.
Can't forget the decals!
With newly installed decals, I took the car to Targa Newfoundland and back. We managed to be the first 510 to ever finish the rally, ended up 9th overall, 2nd in class!
Clip of some action: http://www.youtube.com/watch?v=mvZ6g85-EcY
Now my car whiles away its days going to the occasional hillclimb, trackday and weekend jaunt. Don't know what's next for it but I the next logical step involves more HP.
Hillclimb flyby: http://www.vimeo.com/1268061
Hillclimb onboard: http://www.vimeo.com/1338118
Laguna Seca 92dB approved!
Crater Lake en route to Larison Rock Hillclimb
Hillclimbing is high stakes!
Offroading (!) in Downieville CA (friends neglected to tell me our camping location was off a dirt road). Wish I still had my mudflaps on here!