Yes but you must soak it in olive oil and paint it red.
Yes it will. You would have to do a complete engine swap. The Silvia engine is the SR20DET. They don't cost that much.
Yes, you just need a conversion kit and alot of time,money, and shipped parts or find a junked s15.
yes it can and it's really a pretty simple swap.
Yes
yes, and if its turbo in the US, its been modded or gotten an engine swap.
Depending on which Altima and which SR20DET you're referring to. S13 SR20DET=205 hp S14 SR20DET=220 hp S15 SR20DET=247 hp
If your car is an e30 than the swap is relatively easy. If your car is an e36 then its is more involved, needing a custom oil pan (due to the standard s14 pan hitting the e36s' cross member) and a custom driveshaft.
for what car? 2000 gm s15
Yeah, they are both built off of the S-Platform.
no.
The 4.3 is a V6. If the Sierra had a V6 in it, then it will. If it had a V8 in it, then you will have to move the motor mounts and/or purchase motor mounts for the conversion.
No. They are not interchangeable.