So this is a ''simple SSTO, can handle until 20T, propelled in surface by 2 (maybe 3) R.A.P.I.E.R engines, and in vacuum by 4 nuclear NERV engines.
Remember i said it had maybe 3 R.A.P.I.E.R engines?, well thats because in the cargo bays, there is a small portion reserved to a ''secret'' engine, just press ''1'' to deploy it, and press 2 to close it, MAYBE reachs orbit.
DONWLOAD: https://download946.mediafire.com/pgyqjno8g3jggqtxfxeRp2dOZNjvEgyHwr06-6-gaQb_m_tX5QozJrufJX-RKjDvuhjhP8X8ruilMNGuvt84Nb-fg4pVivmWhsleJHXHWqavo_aIG_rZc3nUr9HDECWWnfrO6nNtYr0B60W2RPmg9mC7OuHmqb-v1dLHyVtNXo1B1g/6820b7wsdp4tsgu/SunnyKerb+SSTO.craft
The bug with the engine secret bay is now fixed, now you can press 1 or 2 freely without having a care LOL.
(feel free to comment suggestions.)