if he's at the level where he's going to have someone install the jb4, tell him to get the cobb instead. He can install it sitting in the cabin.
2011 - 335is e92 - Cobb PTF E40/Rob - Beck/AR/Helix (458 rwtq and 479 rwhp - @ 17 psi and 6,000 rpms) - FOR SALE
2007 - 911 Turbo - EP1/AMS (617 awtq and 500 awhp) - Retired
2008 - 335i e92 - Cobb/AR/Helix/OSS (384 rwtq and 356 rwhp) - Retired
2003 and 2005 330i/ci zhp - Stock - Retired