A novel integrated olefin processing scheme is provided where olefins and paraffins are processed to produce high octane gasoline blending components. The integrated process involves the processing of olefins by hydroisomerization to produce a hydroisomerate stream which is subsequently alkylated in an alkylation process with branched chain paraffin hydrocarbons to produce an alkylate product. The alkylate product can further be separated into various fractions, including propane, n-butane, i-butane and a C.sub.5 + alkylate stream. The C.sub.5 + alkylate stream can be separated into an i-pentane stream and a deisopentanized C.sub.5 + alkylate stream.