it will be a Bolt on swap , but body changes are customs intelligence magnet. If there is no proof of a body legal import whole vehicle gets confiscated. Avoid temptation of doing swap supreme court have empowered the FBR(Customs) for confiscation of all such vehicles.
The Interim ordinance of body swaps & NCP registration of 1998 was also cancelled and all such cars registered are under car-hunt via Excise MVR departments of all provinces. -
for information- President / Chief Executive of country can issue an ordinance (a decree) valid for 90 days extendible to 180 days if the ordinance is not tabled during 180 days in National assembly and onward approved by SENATE it is cancelled by default under constitution of Pakistan. all perks & privileges stand null & void and reverted.