BRAAP and I weighed the S52 package this afternoon. On the same digital scale, a stock L24, fully dressed & dry, weighed in at 389.4 lbs. The S52, with equivalent components and oil, water, motor mount brackets, weighed in at 406.6. These two motors are within a handful of lbs of each other. A very welcome surprise.
The ZF trans weighed in at 83 lbs (wet), also very close to the L-series weight.
BRAAP will be posting the pictures in this thread, post 2 and 13... http://forums.hybridz.org/showthread.php?t=125246
The car will be weighed before and after to finalize the numbers.