There lots of options depends how much ya want spend. 1.6 pinto not worth hassle esp later e-max ones. bin it find injection spec 2.0 bin injection fit twin 45s or bike carbs high torque cam and decent exhaust manifold.
other option is cheap diy turbo conversion ie rob carb+turbo off a renault 5 or similar and retro fit and keep your fingers crossed.
otherwise it a cossie transplant or 2.9v6 from xr4x4.
dont even bother with 2.8 0r 2.0 twin cam