A shared appreciation loan shall not be subject to any provisions of this code or the Financial Code which limits the interest rate or change of interest rate of variable, adjustable, or renegotiable interest instruments, or which requires particular language or provisions in security instruments securing variable, adjustable, or renegotiable rate obligations or in evidences of such debts except for those specifically imposed by Chapter 4 (commencing with Section 1917.010) or Chapter 7 (commencing with Section 1917.320) for loans subject to those chapters. This section is declaratory of existing law.