BTRC recently released "Fires of Heaven" for EABA that has a 90 page spacecraft construction, maintenance and combat section that would be perfect for EP spacecraft as it's fairly low tech (Most drives use newtonian mechanics, weapons are limited to laser, missiles, particle accelerators and short wanged plasma cannon) and detailed enough for RPG use while not being too detailed or abstract.
If you leave out the FTL Rozkhov drive and the Vorn's inertialless engines and gravity weapons, it makes an absolutely perfect ship system for EP and I highly recommend it, even if you'd need to learn to use the EABA system to run space combat in EP.
I'd even go so far as to suggest that posthuman studio consider licensing a version of the "Fires of Heaven" ship system for EP.
Here's a review of the FoH ship system, and again, if the makers of EP would consider taling with BTRC I think they could make a good deal for everyone involved. People who want a ship system for EP would have it, post human wouldn't have to make one from scratch and get a good one and BTRC could get a piece of each sale. Sounds like everyone wins.
"I learned the hard way that if you take a stand on any issue, no matter how insignificant, people will line up around the block to kick your ass over it." -Jesse "the mind" Ventura.