The first one I bought was the one with the little lights in the bridge and lower sensor dome. I must say that this kit must get the award for the most insanely horrible attachment where the engine pylons connected to the secondary hull. Trying to get that plug thing in the loop at the bottom of the pylon to hold up the engines about drove me insane as a kid, lol. The horrible sag really depressed me, lol
Bat part fitting seemed to plague many 60's sci-fi model kits from AMT and Aurora. Somehow, most of their car kits had no trouble reaching a nice fit, even with all of the engine and interior parts. Go figure!