what porsche engine to use in a sand rail?

[MatobaImportRacing]

what is the best air-cooled porsche engine to use in a sand rail?

[Cbass]

Typically, the 356 or 914 2.0 would be the hot ticket to have, for most VW based rails. If you're building it from the ground up though, I would suggest a flat six, but they can start getting expensive. No such thing as a cheap 911

[83-944]

It all depends on your budget!!

356 engines are getting exp[ensive to rebuild.
914 engines are Type 4 VW engines. Relatively cheap parts, massively upgradeable.
911 engines weigh a awful lot more than any of the others. You'll need a supplemental oil cooler system, parts are very expensive, you'll need an oil tank cause it's dry sump, yada yada.

If you got the money, go 911, IIRC a 2.7 should bolt right on to a T2 tranny.

Less money is to build up a T4 engine, it's reliable, less work, no main oil hoses to break/leak.

Good luck!