Not surprised that there are so many opinions. Its really cool to have a platform that can support so many different options. Its really unique.

Options I see: (let me know if i'm off base on cost)

-Replace Head Studs and do top end only (~$6,000)
-Full Rebuild 3.0 to stock specs (~$12,000)
-Full Rebuild to 3.2ss, keep CIS (~$16,000)
-Full Rebuild to 3.2ss with EFI (~$20,000)
-Full Rebuild to 3.2ss with EFI and Carbs/ITB (~$24,000)
-993/964 3.6 with top end rebuild (~$28,000)
-993 VRAM with top end rebuild (~$32,000)

Does this seem accurate? I hate to focus on cost, but it's always a consideration in my head.

I never regretted my 95 3.6 swap ... no more valves to adjust , more horsepower and torque and not too bad of an ordeal to install as all the parts/kits are available from Patrick Motorsports and Instant G , the key is to finding a donor motor that's still in relatively good shape !

Glad I pulled the trigger in 2015, Did most of the work myself. It can be done!!!!
3.6L Conversion part costs: $16K

Lightened flywheel for 915 - (came with motor)
Sachs or KEP clutch - $800
Front mounted SETRAB 72 row oil cooler - $600
Custom oil lines front & rear - $700
Complete custom fuel lines - $500
964 nose piece - $300
GT headers - $600
SW chip - $500
Freshened 915 with Wavetrak - $2500
2015 - 3.6L from I.G. - $12.5K
Sold broken 3.0L - ( offset $3500) (thanks Bruce)
Aase, Precision Motorwerks & Johnson Alignment were the sanity checks and pro help to get the car to the track safely - some more $, not bad