KerbalX

Actually Stable Shuttle or just A.S.S. is a perfectly balanced spaceplane that will keep center of mass aligned with center of the craft at all times.
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Spaceplane can function as an 40 ton cargo SSTO on Kerbin, Duna and Laythe. For that you need to clip total of 10-12 Raipers into the nacelles. However with the launch system it is can lift (from Kerbin) heavier payloads (60t+) with more orbital delta V left.
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Have big refinery build in on the back, use fuel cells to power it. Otherwise RTGs cover all your needs. Use 2 ore tanks on either side to offset unbalanced payloads or just design them better.
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Host up to 6 Kerbals. Can easily land on Mun, Minmus and other rocks. Cannot go to Tylo and Eve. Need some customization to go to Laythe and Duna.
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This is a vacuum optimized version with ordinary struts (LOTS OF STRUTS). It will run on pure stock KSP without Kraken encounters. For Laythe and Duna will release other versions of this craft with autostruts. Recommend to use Kerbal joint reinforcement mod to delete pesky struts and lift more FPS with minimal effort.
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Description

[1] - Raiper mode switch
[2] - Cargo bay doors
[3] - Nuke + vertical control switch
[0] - RCS switch

A stock rocket called ASS strutted. Built with 339 of the finest parts, its root part is fairingSize3.

Built in the VAB in KSP version 1.12.3.

Description

[1] - Raiper mode switch
[2] - Cargo bay doors
[3] - Nuke + vertical control switch
[0] - RCS switch

A stock rocket called ASS strutted. Built with 339 of the finest parts, its root part is fairingSize3.

Built in the VAB in KSP version 1.12.3.