indeed!.
my mechanic stripped a 1.3 and 1.6 satria before. different in chassis strength is obvious.
1.3 are of single 'stitch' while 1.6 was 'double stitch / welding'. this translated into 1.6 chassis is almost twice stronger
than those of 1.3 chassis.
TS should consider 1.6 chassis to start with. else, stripped the 1.3 chassis and do spot welding before doing any engine transplant.