[Nicks911]

Background:

Car is an 81 911SC currently stock. Car is my daily driver with 150K miles on it. I put on about 10K a year and drive the car in summer and winter.

Budget ~15K

Goal reliable Daily driver with a bit more HP some where in the low to mid 200s

Thinking about doing the following:

If cylinders are good reuse with 10.5 pistons if not bump in displacement using 98mm or 100mm p/c.
Twin plug spark (haven't decide on a system, but much prefer the look of distibutor over crank fire)
964 Cams
Port head to early SC spec
SSIs
Keep CIS (good for cold winter start up and has been built proof reliable for me over the last 10 years or so)

Questions:

Can carbs be made to work well enough that I Wouldn't mind DD in the winter sub zero temps for starting.

Is 10.5 too high with twin plug for street gas

Why not go with machine in 102mm P/C if I need new p/c?

Any other comments?

Thanks in advance for the help.

Nick