need engine id help!

[jacques]

bought a pig in a poke! on e-bay...supposed to be a rebuilt GN turbo motor......block number is 1261787....have been told its a 78, or a 79 block?(non-turbo)...heads and intake manifold are steel, head number is B-25504443..are these turbo heads?.....could someone have built a motor with turbo internals? has carburated draw-thru setup....will an edelbrock #5486 intake fit , so i can convert to a blo-thru setup?(have been told this manifold fits 79 and later blocks?)
any info appreciated!

 

[TURBOTIMMER]

Your best bet is to post this on B4Blacks forum. Rich and the other guys there are very knowledgable when it comes to the earlier turbo cars.