I'm intrigued with your quest for a power steering system for the car. I know it's been done on this side of the pond using Ford and Subaru racks but that does require a fair abount of fabrication. I've held off and just contnued with the manual system. The LS1 added no weight to the front of my car so it had no detrimental effect on the steering. I can go into an oversteer situation now with a wee bit of throttle that the L28 couldn't give me, though.
Anyway - I'd think with all the hydro lubrication your roads get there that manual would be fine. Mine turn very easily when the surface is damp.