is envisioned that a typical door module 50 would have an overall outer dimension of approximately 94 u00bd inches tall due to variations in door sizes the overall width of the door module 50 must be adaptable to accommodate such changes although materials of construction may vary according to local building codes it is envisioned that a sixth top strut 51 cripple studs 52 header base 53 and at least two header support studs 54 would be comprised of standard size such as 2 u2033 by 4 u2033 wood or steel framing material or other material that satisfies building code requirements a pair of endpieces 18 are affixed at each end to the top stringer 51 header base 53 and header support studs 54 using nails or any other suitable fastening device it is envisioned that each endpiece 18 would be comprised of a similar standard building material of a 1 u2033 u00d7 4 u2033 dimension such that when two consecutive modules are aligned end to end two adjacent endpieces 58 align together again it is further envisioned that headers may be constructed in accordance with any accepted technique used in the building industry further a plurality of alignment tools are provided for installation for the above modules a wall straightness tool 60 as shown in fig6 a 6 c has a 3 55 inch wide by 1 25 inch deep groove 62 as does the corner alignment tool 70 of fig7 a 7 c indicated as 72 and the u201c t u201d shaped wall alignment tool 80 of fig8 a 8 b indicated as 82 to use the present invention for constructing a structure of preset plans the.